static void
window_drag_begin (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
GdkPixbuf *pixbuf;
GtkWidget *window;
GtkWidget *image;
int hotspot;
hotspot = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (data), "hotspot"));
window = g_object_get_data (G_OBJECT (widget), "drag window");
if (window == NULL)
{
window = gtk_window_new (GTK_WINDOW_POPUP);
g_print ("creating new drag widget\n");
pixbuf = get_image_pixbuf (GTK_IMAGE (data));
image = gtk_image_new_from_pixbuf (pixbuf);
g_object_unref (pixbuf);
gtk_widget_show (image);
gtk_container_add (GTK_CONTAINER (window), image);
g_object_ref (window);
g_object_set_data (G_OBJECT (widget), "drag window", window);
g_signal_connect (window, "destroy", G_CALLBACK (window_destroyed), widget);
}
else
g_print ("reusing drag widget\n");
gtk_drag_set_icon_widget (context, window, 0, 0);
if (hotspot == CENTER)
g_signal_connect (widget, "drag-end", G_CALLBACK (window_drag_end), window);
}
static void
image_drag_begin (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
GdkPixbuf *pixbuf;
gint hotspot;
gint hot_x, hot_y;
pixbuf = get_image_pixbuf (GTK_IMAGE (data));
hotspot = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (data), "hotspot"));
switch (hotspot)
{
default:
case TOP_LEFT:
hot_x = 0;
hot_y = 0;
break;
case CENTER:
hot_x = gdk_pixbuf_get_width (pixbuf) / 2;
hot_y = gdk_pixbuf_get_height (pixbuf) / 2;
break;
case BOTTOM_RIGHT:
hot_x = gdk_pixbuf_get_width (pixbuf);
hot_y = gdk_pixbuf_get_height (pixbuf);
break;
}
gtk_drag_set_icon_pixbuf (context, pixbuf, hot_x, hot_y);
g_object_unref (pixbuf);
}
void
image_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
GdkPixbuf *pixbuf;
const gchar *name;
switch (info)
{
case TARGET_IMAGE:
pixbuf = get_image_pixbuf (GTK_IMAGE (data));
gtk_selection_data_set_pixbuf (selection_data, pixbuf);
g_object_unref (pixbuf);
break;
case TARGET_TEXT:
if (gtk_image_get_storage_type (GTK_IMAGE (data)) == GTK_IMAGE_ICON_NAME)
gtk_image_get_icon_name (GTK_IMAGE (data), &name, NULL);
else
name = "Boo!";
gtk_selection_data_set_text (selection_data, name, -1);
break;
default:
g_assert_not_reached ();
}
}
static void
drag_begin (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
GdkPixbuf *pixbuf;
pixbuf = get_image_pixbuf (GTK_IMAGE (data));
gtk_drag_set_icon_pixbuf (context, pixbuf, -2, -2);
g_object_unref (pixbuf);
}
static void
copy_image (GtkMenuItem *item,
gpointer data)
{
GtkClipboard *clipboard;
GdkPixbuf *pixbuf;
clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
pixbuf = get_image_pixbuf (GTK_IMAGE (data));
gtk_clipboard_set_image (clipboard, pixbuf);
g_object_unref (pixbuf);
}
void
drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
GdkPixbuf *pixbuf;
pixbuf = get_image_pixbuf (GTK_IMAGE (data));
gtk_selection_data_set_pixbuf (selection_data, pixbuf);
g_object_unref (pixbuf);
}
